The Image J, (software ; NIH, USA), an imaging software developed for analysis and visualization of images obtained with grayscale photograph, was used forplanimetric evaluation of the area of hypofluorescence detected by ICGA and the area of PDT-induced leakage seen on FA. Choriocapillary hypoperfusion and nonperfusion were graded according to a scale. Angiographies were evaluated by two masked readers, and planimetricand grading results of both readers were averaged.